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12 January, 12:40

A researcher is interested in whether the color of an animal's surroundings affects learning rate. she tests 16 rats in a box with colorful wallpaper. it is known that the average rat of this strain can learn to run this particular type of maze in a box without any special coloring in 25 trials, with a variance of 64; the distribution is normal. the mean number of trials to learn the maze for the rats tested with the colorful wallpaper is 11. what is the null hypothesis?

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  1. 12 January, 14:53
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    The null hypothesis is that the color does not affect the learning rate.

    The null hypothesis states that there is no statistical difference between the two items; in this case, between the times in special colored walls or in not-special-colored walls.
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